How to display data in datagridview from weight Machine through serial port in windows application

private SerialPort port = new SerialPort();  //Create New Serial Port
private DataTable dt = new DataTable(); //Create New Data Table for store the Resaving Data from serial port..

private DataGridView dataGridView = new DataGridView(); // create new DatagridView.

public Form1()
{
    InitializeComponent();
//Create event Handler and invoke the Method
    port.DataReceived += new SerialDataReceivedEventHandler(port_DataReceived);
//open the port
    port.Open();
//Get Data from datatable..
    dataGridView.DataSource = dt;
}
// Create Method for read data from serial port and storage to datatable .. 
private void port_DataReceived(object sender, SerialDataReceivedEventArgs e)
{
    string data = port.ReadExisting();
    DataRow dr = dt.NewRow();
    dr["DataReceived"] = data;
    dt.Rows.Add(dr);
}